diff --git a/algorithm.c b/algorithm.c
index 6d3a2b94..b1ffa327 100644
--- a/algorithm.c
+++ b/algorithm.c
@@ -1169,7 +1169,7 @@ static algorithm_settings_t algos[] = {
 
   { "darkcoin-mod", ALGO_X11, "", 1, 1, 1, 0, 0, 0xFF, 0xFFFFULL, 0x0000ffffUL, 10, 8 * 16 * 4194304, 0, darkcoin_regenhash, NULL, NULL, queue_darkcoin_mod_kernel, gen_hash, append_x11_compiler_options },
 
-  { "sibcoin-mod", ALGO_X11, "", 1, 1, 1, 0, 0, 0xFF, 0xFFFFULL, 0x0000ffffUL, 11, 8 * 16 * 4194304, 0, sibcoin_regenhash, NULL, NULL, queue_sibcoin_mod_kernel, gen_hash, append_x11_compiler_options },
+  { "sibcoin-mod", ALGO_X11, "", 1, 1, 1, 0, 0, 0xFF, 0xFFFFULL, 0x0000ffffUL, 11, 2 * 16 * 4194304, 0, sibcoin_regenhash, NULL, NULL, queue_sibcoin_mod_kernel, gen_hash, append_x11_compiler_options },
   
   { "marucoin", ALGO_X13, "", 1, 1, 1, 0, 0, 0xFF, 0xFFFFULL, 0x0000ffffUL, 0, 0, CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE, marucoin_regenhash, NULL, NULL, queue_sph_kernel, gen_hash, append_x13_compiler_options },
   { "marucoin-mod", ALGO_X13, "", 1, 1, 1, 0, 0, 0xFF, 0xFFFFULL, 0x0000ffffUL, 12, 8 * 16 * 4194304, 0, marucoin_regenhash, NULL, NULL, queue_marucoin_mod_kernel, gen_hash, append_x13_compiler_options },